Our take in 30 seconds
Best for: cold and very cold climatesStrengths
- Keeps 93% of its heat at 5°F, so backup heat rarely runs
- Cooling efficiency up to SEER2 22.8, better than 83% of models
- Variable-speed compressor: quieter, steadier temperatures and better humidity control
- Uses newer, lower-impact R-454B refrigerant
Good to know
- Efficiency depends on the indoor unit: SEER2 ranges 15.9–22.8, so ask which pairing you're quoted
Running-cost calculator
Pre-filled with EIA prices · edit any fieldUses the base certified SEER2 (15.9) and HSPF2 (9.8). Assumes the unit is correctly sized. How we calculate.
Heating capacity as it gets colder
A heat pump's output falls as outdoor temperature drops. This is the certified heat output of the Mitsubishi Electric PUZ-AK24NLHZ*** at the three ENERGY STAR test temperatures (cooling capacity is 24,000 BTU/h for reference).
Retention at 17°F: 74% · at 5°F: 93%. Learn how to use these numbers in our cold-climate guide.
Estimated running cost in every state
Same unit, very different bills: from about $646 a year in Louisiana to $2,579 in Maine, driven by local electricity prices and how much heating or cooling the climate needs. Click a column to sort.
| State | Price | Heating | Cooling | Total / yr |
|---|---|---|---|---|
| Louisiana | 12.87¢ | $257 | $389 | $646 |
| Florida | 14.99¢ | $193 | $543 | $736 |
| Mississippi | 14.43¢ | $371 | $392 | $763 |
| Nevada | 12.72¢ | $436 | $346 | $782 |
| Washington | 14.63¢ | $711 | $77 | $788 |
| Tennessee | 13.42¢ | $537 | $263 | $800 |
| Arizona | 15.05¢ | $301 | $500 | $801 |
| Oregon | 15.92¢ | $728 | $108 | $836 |
| North Carolina | 14.95¢ | $555 | $293 | $849 |
| Arkansas | 14.37¢ | $534 | $325 | $859 |
| Kentucky | 13.80¢ | $631 | $229 | $860 |
| South Carolina | 15.76¢ | $495 | $381 | $876 |
| Georgia | 15.90¢ | $500 | $384 | $884 |
| Texas | 15.91¢ | $409 | $480 | $889 |
| Utah | 13.31¢ | $723 | $181 | $903 |
| Alabama | 16.33¢ | $513 | $394 | $908 |
| Oklahoma | 14.82¢ | $593 | $336 | $928 |
| Idaho | 13.37¢ | $802 | $141 | $943 |
| New Mexico | 16.51¢ | $708 | $249 | $957 |
| Nebraska | 13.54¢ | $812 | $184 | $996 |
| West Virginia | 16.31¢ | $839 | $197 | $1,036 |
| Missouri | 16.02¢ | $778 | $266 | $1,044 |
| Virginia | 17.64¢ | $756 | $293 | $1,049 |
| Kansas | 15.47¢ | $796 | $257 | $1,052 |
| Wyoming | 14.43¢ | $1,031 | $109 | $1,140 |
| Colorado | 17.17¢ | $981 | $181 | $1,163 |
| Delaware | 18.70¢ | $908 | $282 | $1,191 |
| Indiana | 17.02¢ | $973 | $218 | $1,191 |
| North Dakota | 13.31¢ | $1,103 | $90 | $1,193 |
| California | 29.75¢ | $765 | $449 | $1,214 |
| Montana | 15.57¢ | $1,112 | $106 | $1,218 |
| South Dakota | 15.15¢ | $1,082 | $149 | $1,231 |
| Iowa | 17.06¢ | $1,121 | $193 | $1,314 |
| Ohio | 19.38¢ | $1,107 | $234 | $1,341 |
| Maryland | 21.40¢ | $1,039 | $323 | $1,362 |
| Illinois | 19.32¢ | $1,159 | $233 | $1,392 |
| Minnesota | 17.20¢ | $1,327 | $143 | $1,470 |
| Pennsylvania | 21.77¢ | $1,244 | $263 | $1,507 |
| Wisconsin | 19.41¢ | $1,386 | $176 | $1,562 |
| New Jersey | 24.61¢ | $1,266 | $334 | $1,600 |
| District of Columbia | 25.98¢ | $1,188 | $431 | $1,619 |
| Connecticut | 24.51¢ | $1,541 | $240 | $1,781 |
| Michigan | 22.99¢ | $1,576 | $208 | $1,785 |
| Hawaii | 47.18¢ | $67 | $1,852 | $1,919 |
| Vermont | 23.84¢ | $1,771 | $162 | $1,933 |
| Rhode Island | 28.18¢ | $1,771 | $255 | $2,027 |
| New York | 28.65¢ | $1,801 | $281 | $2,082 |
| New Hampshire | 27.64¢ | $1,974 | $209 | $2,183 |
| Massachusetts | 30.48¢ | $2,003 | $276 | $2,279 |
| Alaska | 29.41¢ | $2,521 | $44 | $2,565 |
| Maine | 32.11¢ | $2,385 | $194 | $2,579 |
Similar-size alternatives
Other mini-split / multi-split units within ±15% of this model's cooling capacity, sorted by efficiency. Cost difference is versus the Mitsubishi Electric PUZ-AK24NLHZ*** at U.S.-average rates.
| Model | Cooling BTU/h | SEER2 | HSPF2 | 5°F kept | Est. yearly cost | |
|---|---|---|---|---|---|---|
| Senville SENA-24HF-OG | 24,000 | 19–21 | 13.5 | 83% | $876 (−$255) | Compare |
| Senville SENA/24HF/OQ | 24,000 | 19.2–21.5 | 11.5 | 93% | $982 (−$149) | Compare |
| Pioneer YN024GMFI22RPE | 24,000 | 19–21.5 | 11.2 | 80% | $901 (−$231) | Compare |
| Hisense AOU-24U3T25U | 24,000 | 19–20 | 10.5 | 100% | $916 (−$215) | Compare |
| Pioneer YN024GLSI24RPG | 23,000 | 19–23 | 10.4 | 76% | $940 (−$191) | Compare |
| Mitsubishi Electric PUZ-AK24NLHZ2*** | 24,000 | 17–22.8 | 10.8 | 100% | $982 (−$150) | Compare |
Full specifications
| Brand | Mitsubishi Electric |
| Outdoor model | PUZ-AK24NLHZ*** |
| Certified by | Mitsubishi Electric U.S. HVAC Division |
| Product type | Mini-split / multi-split |
| Compressor | Variable-speed (inverter) |
| Refrigerant | R-454B |
| Cooling capacity | 24,000 BTU/h |
| Nominal size | 2 tons |
| SEER2 (certified range) | 15.9 – 22.8 |
| EER2 (best) | 16.1 |
| HSPF2 (best) | 9.8 |
| Heating capacity @ 47°F | 28,000 BTU/h |
| Heating capacity @ 17°F | 20,800 BTU/h |
| Heating capacity @ 5°F | 26,000 BTU/h |
| COP @ 5°F | 2.2 |
| ENERGY STAR cold-climate | Yes |
| Certified indoor pairings | 9 |
| Latest certification | 2025-03 |
Source: ENERGY STAR Certified Heat Pumps (U.S. EPA), retrieved November 7, 2026. Capacities and HSPF2 are the highest values across certified pairings; confirm your exact system's AHRI reference number with your installer.
Frequently asked questions
How much does the Mitsubishi Electric PUZ-AK24NLHZ*** cost to run per year?
At the U.S. average residential electricity price of 18.16¢/kWh and typical national heating and cooling hours, we estimate about $1,132 per year ($830 heating, $302 cooling). It ranges from about $646 in Louisiana to $2,579 in Maine.
Does the Mitsubishi Electric PUZ-AK24NLHZ*** work in cold weather?
Yes. It is ENERGY STAR cold-climate certified and delivers 26,000 BTU/h at 5°F, 93% of its 47°F capacity, with a COP of 2.2 at 5°F.
What size is the Mitsubishi Electric PUZ-AK24NLHZ***?
It is rated at 24,000 BTU/h of cooling, roughly 2 tons, and 28,000 BTU/h of heating at 47°F. Proper sizing should be confirmed with a Manual J load calculation.